Electric heater



June 15 1926. 1,589,285

F. YOKEL ELECTRIC HEATER Filed August 16 1924 2 Sheets-Sheet l June 15 1926.

F. YOKEL ELECTRIC HEATER Filed August 16, 1924 2 Sheets-Sheet 2 INVENTO ATTORNEY Patented June 15, 1926.

UNITED STATES FRANK YOKEL, OF AVALON, PENNSYLVANIA.

ELECTRIC HEAT EB.

Application filed August 16, 1924.

This invention is for an electric heater, and relates particularly to electric heaters of the type wherein a concaved reflecting surface is associated with a centrally disposed electric resistance.

In the electric heaters of this type as new commonly used, the electric heating element is generally wound on a relatively small refractory cone, so that the heat is all concentrated at one point, and reflection is relied on to provide for the distribution of the heat.

According to the present invention, I propose to provide a heating element of novel form, having a relatively large heat distributing surface, which may be cheaply manufactured and is attractive in appearance.

A. further object of the invention is to provide for the circulation of air through the heater in such manner as to warm the air passing therethrough, and at the same time keep the heating element from becoming too highly heated, thereby prolonging the life of the resistance wires.

The present invention also provides a heater which is more safe than the usual type, by reason of the resistance wires being shielded.

The invention may be readily understood by reference to the accompanying drawings, in which:

Fig. 1 is a front view of a heater constructed in accordance with my invention;

Fig. 2 is a detail view, showing the heating element removed from the heater structure, and showing the front cover plate of the element removed;

Fig. 3 is a transverse vertical section through the center of Fig. 1;

Fig. 4 is a detail view, showing the back surface of the part shown in Fig. 2.

In the drawings, 5 designates a suitable base on which is an upright 6 to which is adjustably secured, by an adjusting pivot construction common in this type of heater a. short bracket or arm 7, to the outer end of. which is screwed a face plate 8.

To this plate is secured, by rivets or other suitable fastening devices 9. a reflecting disk. preferably of copper, which is generally basin-shaped, that is, concaved. This disk has a concaved outer portion 10 and a recessed central portion 11 having a flat back surface '12. It is to surface 12 that the face plate is secured.

Serial No. 732,389.

Set in the porcelain or terial. The

recess 11 is a plate 13 made of other suitable refractory ma inner face of this plate has a flange 14: at the outer edge thereof, whereby the body of the plate is held away from the back wall 12. An asbestos insulating sheet is preferably provided at 15.

In the front face of member 13 are a series of concentric grooves or channels 16, 17 and 18. There are a plurality of holes 19 in these channels that pass entirely through the plate and communicate with the space at the back thereof.

In each channel are one or more spiraled resistance wires 20. I preferably provide two semi-circular coils in the outer groove 16, and a single length of coil in each of the other grooves, as shown, and propose that each length of coil shall have the same resistance as the others. The ends of these coils are connected in parallel with feed wires 21 through clips 22. I prefer to merely hook the ends of the coils through openings in the clips, whereby an easily detachable connection is provided, rendering substitution of coils a simple matter.

The plate 13 is held in place by bolts 23, or other suitable fasteners, the heads of these bolts being received in countersunk holes 24: in the bottoms of outer groove 16. The bolts pass through the back plate 12.

Fitted over the plate 13 is a cover plate 25 having a centering flange 26 engaging in groove 16. The cover is ornamentally perforated, as shown in Fig. 1, for instance. This cover is held in place by a single central bolt 27 having a nut 28 that is located in a countersunk hole in the center of plate 13.

In the back plate 12 are a plurality of air circulation openings 12. The electric feed wires may be brought in through one of these openings.

In operation, the coils are heated by the passage of current therethrough. This causes the refractory body 13 to become hot, giving a large heat distributing area. At the same time. there is plenty of air space at the back of the plate 13 to insulate the plate from the metal shell, while air may circulate through holes 12 and 19, keeping the member 13 from becoming too hot and heating the air of a room by concentric currents.

The device is safer than those heaters having a central cone that is exposed in that, if

the heater is knocked over, the hot Wires are shielded, and the usual Wire cage may be eliminated.

Various changes may be made in the construction of the various parts Within the contemplation of my invention and under the scope of the appended claims.

I claim as my invention;

1.An electric heater comprising a reflector having an outer concave portion and a central recessed portion, a refractory plate having a groove therein positioned centrally of the reflector, and an electric heating element disposed in the groove.

2. An electric heater comprising a concave reflector having a central recessed portion and a. back portion, a refractory plate having a portion engaging the back portion and disposed in the recess, and an electric heating element on the refractory. plate.

3. An electric heater comprising a concave reflect r, a disk-like plate in the center of the reflector and spaced from the back Wall thereof, and electric heating means in the front of the plate.

4. An electric heater comprising concave reflector, a disk-like refractory plate at the center of the reflector, said plate having grooves in its front face, electric resistance elements inthe grooves, and a perforated cover for the plate.

5. An electric heater comprising aconcave reflector, a refractory plate centrally located therein and spaced from the back thereof, heating elements carried by the plate, said plate having openings therein to permit of the circulation of air there through, the portion of the reflector behind said plate also being perforated.

6. An electric heater comprising a reflector, a refractory plate centrally located in the reflector, an air space being provided between the plate and the reflector, heating elements on the front of the plate received in grooves therein, a perforate cover for the plate, said plate having openings therein leading to the air space, and saic reflector having openings therein leading to the air space.

7. An electric heater comprising a reflector, a refractory plate centrally positioned in the front of the reflector and spaced therefrom, aplurality of heating coils on the face of the plate having ends that project therethrough, and a pair of connecting terminals on the back of the plate to one of Which one end of each coil is connected and to the other of Which the other end of each coil is connected.

In testimony whereof I affix my signature.

FRANK YOKEL. 

